'\" t
.TH "SD_BUS_REPLY_METHOD_RETURN" "3" "" "systemd 257" "sd_bus_reply_method_return"
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.SH "NAME"
sd_bus_reply_method_return, sd_bus_reply_method_returnv \- Reply to a D\-Bus method call
.SH "SYNOPSIS"
.sp
.ft B
.nf
#include <systemd/sd\-bus\&.h>
.fi
.ft
.HP \w'int\ sd_bus_reply_method_return('u
.BI "int sd_bus_reply_method_return(sd_bus_message\ *" "call" ", const\ char\ *" "types" ", \&.\&.\&.);"
.HP \w'int\ sd_bus_reply_method_returnv('u
.BI "int sd_bus_reply_method_returnv(sd_bus_message\ *" "call" ", const\ char\ *" "types" ", va_list\ " "ap" ");"
.SH "DESCRIPTION"
.PP
\fBsd_bus_reply_method_return()\fR
sends a reply to the
\fIcall\fR
message\&. The type string
\fItypes\fR
and the arguments that follow it must adhere to the format described in
\fBsd_bus_message_append\fR(3)\&. If no reply is expected to
\fIcall\fR, this function succeeds without sending a reply\&.
.SH "RETURN VALUE"
.PP
On success, this function returns a non\-negative integer\&. On failure, it returns a negative errno\-style error code\&.
.SS "Errors"
.PP
Returned errors may indicate the following problems:
.PP
\fB\-EINVAL\fR
.RS 4
The input parameter
\fIcall\fR
is
\fBNULL\fR\&.
.sp
Message
\fIcall\fR
is not a method call message\&.
.sp
Message
\fIcall\fR
is not attached to a bus\&.
.sp
Message
\fIm\fR
is not a method reply message\&.
.sp
Added in version 246\&.
.RE
.PP
\fB\-EPERM\fR
.RS 4
Message
\fIcall\fR
has been sealed\&.
.sp
Added in version 246\&.
.RE
.PP
\fB\-ENOTCONN\fR
.RS 4
The bus to which message
\fIcall\fR
is attached is not connected\&.
.sp
Added in version 246\&.
.RE
.PP
\fB\-ENOMEM\fR
.RS 4
Memory allocation failed\&.
.sp
Added in version 246\&.
.RE
.PP
In addition, any error returned by
\fBsd_bus_send\fR(3)
may be returned\&.
.SH "NOTES"
.PP
Functions described here are available as a shared library, which can be compiled against and linked to with the
\fBlibsystemd\fR\ \&\fBpkg-config\fR(1)
file\&.
.PP
The code described here uses
\fBgetenv\fR(3), which is declared to be not multi\-thread\-safe\&. This means that the code calling the functions described here must not call
\fBsetenv\fR(3)
from a parallel thread\&. It is recommended to only do calls to
\fBsetenv()\fR
from an early phase of the program when no other threads have been started\&.
.SH "SEE ALSO"
.PP
\fBsystemd\fR(1), \fBsd-bus\fR(3), \fBsd_bus_message_new_method_return\fR(3)
